Forming machine



June 2. 1925. 1,539,989

O. S. BOWMAN FORMING MACHINE Filed Nov. 15, 1924 /NVE/VTCR 01h/er 5. Bowman,

Allornej Patented lune 2, i925.

UNITED STATES OLIVER S. BOWMAN, OF COLORADO SPRINGS, COLORADO.

FORMING MACHINE.

Application filed November 15, 1924.

To all whom t may concern:

Be it known that l, OLIVER S. BOWMAN, a citizen of the United States, and a resident of Colorado Springs, in the county of El Paso and State of Colorado, have invented a new and useful Forming Machine, of which the following is a specification.

My invention relates to fo ming machines and has for its object the provision of a machine of this class which will feed, punch, shear, form and deliver a sheet metal angle of the form described and claimed in my Patent No. 1,520,325, dated Dec. 23, 1924. Other objects will appear as the description progresses. y

Although I have shown the preferred embodiment of my invention, I do not thereby confine myself to the precise construction shown but wish it understood that various changes in the details may be made within the scope of the claims.

The drawings are for illustrative purposes and are therefore not drawn to scale.

Figure 1 represents a plan view of the strip of sheet metal perforated and slitted but not formed; Fig. 2, an end elevation of the sheet metal angle; Fig. 3, a plan view of the angle showing the shape into which it is adapted to be bent to form a. component of a polygonal mold; Fig. 4, a trans-r verse section on the line 4.-4 in Fig. 6, partly broken away; Fig. 5, a longitudinal section on the line 5-5 in Fig. 6; Fig. 6, a plan view, partly in section; Fig. 7, an end, a side, and an end elevation of the cylinder 36; Fig. 8. an end and a side elevat-ion of the collar 37: Fig. 9, a side and an end elevation of the collar 38; Fig. 10, an end elevation showing the knives 39 disposed between collar 37 and cylinder Fig. 11, an end elevation of the collar 38, showing the pins disposed between collars 33 and cylinder 36; Fig. 12. elevations ofthe knife 39; Fig. 13, a detailed View of the ratchet mechanism, and Fig. 14, a detailed view of the otlbearing arms and tilting meansI therefor.

The machine comprises a frame 1 having guideways 2 3; a fixed die 4, having a longitudinal rib 5, bolted to frame l; a shear blade 6 bolted on the back of said fixed die; a bending plate 7 bolted on the front of said fixed die; a shim 7El disposed between said die and said bending plate; a vertically movable die 8, having a longitudinal groove 9 adapted to receive rib 5, transverse grooves 10, and downwardly'ex- Serial No. 750,196.

tending slides 12, mounted in said guideways; roller 13 mounted on said slides; va shear blade S bolted on the backof die 8; a brake plate T bolted on' the frontof die 8; a shim 9a disposed between die 8 and plate T; a main shaft 14 journaled in frame 1; cams 15 mounted on shaft 14 and adapted to cooperate with rollers 13; adrive wheel W mounted on shaft 14; brackets 16 bolted to die 8; a supplementary shaft 17 journaled in brackets 16; off-bearing arms 17a mounted -on shaft 17 and normally resting in grooves ratchet wheel 28, mounted in framel 1 at the l rear of said dies; a lever 29 mounted on shaft 27 and carrying pawl 30 adapted to engage ratchet wheel 28; a crank 31 mounted on shaft 14; a link bar 32 connectin'g lever 29 and crank 31; a lower feed roller shaft 33, having a gear 34 mounted thereon, journaled in frame 1 directly below shaft 27; a gear 35 mounted on shaft 27 and meshed with gear 34; two'slitting and perforating feed rollers mounted on shaft 27, each roller comprising a cylinder- 36 having rectangular radial grooves a in'one end and semicircular grooves b in the opposite end, a collar 37, having similar rectangular radial grooves c, disposed with grooves c adjacent to grooves a, a collar 38 having semicircular radial grooves al, disposed with grooves CZ adjacent to grooves 7), knives 39, having two slitting segments, disposed in rectangular grooves a and c, and pins 40 disposed in semicircular grooves Z) and (l, said cylinder and collars being clamped together by bolts 41 extending longitudinally through said collars and cylinder; two perforating feed rollers mounted on shaft 27, each roller comprising a pair of collars 44 and 45, having selnicircular radial grooves, said collars being disposed with the radial grooves of one adjacent to the radial grooves of the other, and pins 46 disposed in said radial grooves and clamped therein by bolts ex* tending 4through said collars; two feedV rollers 42m-(muted on shaft 33 adjacent to said slitting and perforating feed rollers and having peripherial grooves f adapted to receive knives 39 and pins 40; two feed rollers 47 mounted on shaft 33. adjacent :to said perforating feed rollers and having peripheral grooves 1L adapted to receive pins 46; two guide collars 56 mounted on 33; a shaft 49 journafled inthe yrear of frame l and carrying flanged guide rollers 50-51 and a supporting roller 52.

Power is applied to drive wheel W which rotates shaft 14 carrying crank 3l.. Each revolution off crank 31 swings arm 29 inan arc of ninety degrees. At the vend of the vdownward swing, afwl 39 engages ratchet :wheel Q8 and, .tlie upward swing, rotates .shaft '27 one `'fourth rof a revolution, which :feeds the nequired amount of sheet metal to Afmalae the angle "54. During the feeding,

'theiknives 39 slit thejmetaland the pins 40 .and 46 perforate it as sho/wn at g, c, and vy0 in Fig. l. arm 29 is at-:the highest point, cams l5 ooact with rollers and lift die 8 .and thereby lcause shear blades'S and f6 .to :eut ofi' the strip of metal 53, the rib 5 and groove 9 to form the corrugatiOn, and Yplate'zto bend the angle over plate T, therethy 'completing the sheet metal .angle 5l. The slits y and 1c permit the angle .54 to .be benit as showvn `in Fig. 2 which forms a component .of Aa :polygonal mold to be fused in a .concrete floor as described iin said patent;

The point of @bending the flange on the angle 154 may Abe altered fby substituting a pair off thicker loaf .thinner shims for shims i9 `and 7a.

In the drawings I hane shown -the guide collars and feed rollers lset for the maximum length offstrip .53. When shorter strips vare desi-ned, the guide .collars 56 are set to the proper distance to :accommodate .the desired -ividth vsheet -and ,the feed `roillers are set .at the pimpen' relative points on their respective shafts. lThe flanged guide rollers 50 and l5l are :also set accordingly.

lolazim: Y

1. In .amachine of vthe ,class described, the combination of -raframe having tivo guideways; .a fixed die, vhaving a longitudinal rib, mounted on .said frame `above said guidewaysr; a movable die, `having a longitudinal groove adapted te receive said longitudinal rib, mounted lin said .guideivaysgy a .main shaft jcnrnaled in said frame; a drive wheel mounted on said main shaft; an ufpzper feed roller :shaft journaled iin said iframe; a ratchet wheel mounted on said slipper feed :roller shaft; a lever, carryinga pafwl `adapted sto engage said ratchet wheel, mounted on 4,upper feed -rollershaft; a crank mounted .on isaid :main shaft; a link hat connect-ingsaid lever and said crank; a :low feed shaft `joumaailed in said fremedinect-l below said Yupper feed roller shaft; two itting and perfor-ating rollers .mounted on said upper feedk roller shaft, each roller comprising a cylinder having rectangular radial grooves in one end and similar semicircular radial grooves in the other end, a collar having similar rectangular radiali grooves, `disposed with its rectangular grooves adjacent to the rectangular grooves of said cylinder, a collar, having similar semicircular radial grooves, disposed With its semicircular radial grooves adjacent to the semicirc'ular radial grooves of said cylinder; knives, having twoslitting segments, dispomr in said rectangular grooves and pins disposed in said semicirf cular grooves and firmly clamped therein; two feed rollers mounted on said lower feed roller shaft and'having peripheral grooves adapted to receive 'the knives and pins of said slitting and perforating rollers; two perforating rollers mounted kon saidupper feed `roller shaft, each of said perforating rollers comprising two collars, each having seniicircular radial grooves, disposed with the grooves of one collar adjacent to the grooves of the other, and ins disposed in said grooves and firmly c amped therein; and two feed rollers mounted on said lower feed roller shaft adjacent `to said perforating feed rollers and each having a peripheral groove adapted to receive the points of said pins.

2. In a machine of elle classdescribed, the combination of a frame having `two guidelways; -a fixed die, having a longitudinal rib, mounted on said frame above said guideways; a .shear blade mounted on the back of said fixed die; a movable die, 1having a longitudinal groove adapted to receive said longitudinal rib, mounted in said guideways; a shear blade bolted vto the back of said movable die; a main shaft jcurnaled Tin said frame.; an upper feed roller shaft .journaled in said frame; a ratchet wheel imounted on said `upper feed roller Vshaft-g ailefver, carrying a parwl vadapted to engage said ratchet wheel, mounted on said upper feed roller shaft; a crank mounted .on said main slaailit; a limrk Vbar*connecting-said lever and said crank; a lower feed roller shaft iofumaled in said frame dinectly `below said l.fucpper fd roller shaft; two slitting and :pefr'forating feed rollers nwunted on said upper feed roller shaft, each roller #comprising a cylinder having rectangular radial grooves in one end and seinicircular radial grooves .in `the other end, a collar, liaving similar rectangular radial grooves, disposed with its rectangular radial grooves adjacent to the rectangular radial grooves of said cylinder, a collar, having .similar semicir.- cula-r radial grooves, disposed with its semioircular radial gnooves adjacent to! the semicircular radial grooves of said cylinder,

knives, having two slitting segments, disposed in said rectangular grooves, and pins disposed in said semicircular grooves and clamped therein; two feed rollers mounted on said lower feed roller shaft and having peripheral grooves adapted to receive the knives and pins of said slitting and perforating feed rollers; two perfor-ating feed rollers mounted on said upper feed roller shaft, cach of said perforating feed rollers comprising two; collars, each having semicircular radial grooves, disposed with the grooves of one collar adjacent to the grooves of the other, and pins disposed in said semieircular radial grooves and clamped therein; and two feed rollers mounted on said lower feed roller shaft directly under said perforating feed rollers and having peripheral grooves adapted to receive the points of the pins in said perfo-rating feed rollers.

In a machine of the class described, the combination of a frame having two guidevvays; a fixed die, having a longitudinal rib, mounted in said guideways; a shear blade bolted on the back of said fixed die; a bending plate bolted on the front of said fit-:ed die; a shim disposed between said die and said bending plate; a movable die, having a longitudina groove adapted to receive said longitudinal rib, mounted in said guideways; a shear blade bolted on the back of said movable die; a plate bolted on the front of said movable die; a shim disposed between said movable die and said plate; a main shaft journaled in said frame; an upper feed roller shaft journaled in said frame; a ratchet wheel mounted on said upper feed roller shaft: a lever, carrying a pawl adapted to engage said ratchet wheel, mounted on said upper feed roller shaft: a crank mounted on said main shaft; a link bar connecting said lever and said crank; a lower feed roller shaft journaled in said frame directly below said upper feed roller shaft; two slitting and perforating feed rollers mounted on said upper feed roller shaft, each roller comprising a cylinder having rectangular radial grooves in one end and semicircular radial grooves in the other end. a collar having similar rectangular radial grooves and disposed with its rectangular radial grooves adjacent to the rectangular radial grooves of said cylinder', a collar having similar scmicircular radial grooves and disposed with its semicircular radial grooves adjacent to the semicircular radial grooves of said cylinder, knives, having two slitting segments, disposed in said rectangular radial grooves and pins disposed in said semicircular radial grooves; two feed rollers mounted on said lower feed roller shaft and having peripheral grooves adapted to receive the knives and pins of -said slitting and perforating-i` feed rollers;

two perforating feed roller mounted on said upper feed roller shaft, each of said perforating feed rollers comprising two collars having semicircular radial grooves and disposed with the grooves of one collar adjacent to the grooves of the other, and pins disposed in said grooves; and two feed rollers mounted on said lower feed roller shaft and having peripheral grooves adapted to receive the points of said pins in said perforating feedA rollers.

4. In a machine of the class described, the combination of a frame having two guideways; a fixed die, having a longitudinal rib, mounted on said frame above said guideways; a shear blade bolted on the back of said fixed die; a movable die, having a longitudinal groove adapted to receive said longitudinalA rib, mounted in said guideways; a shear blade bolted on the back of said movable die; a main shaft journaled in said frame; brackets mounted on said movable die; a supplementary shaft journaled in said brackets; off-bearing arms mounted on said supplementary shaft; a tilting arm mounted on saidsupplementary shaft; a slotted bar, having its slotted portion disposed around said main shaft and its upper end connected to said tilting arm; and a segmental cam mounted on said main shaft and adapted to operate said slotted bar.

5. In a machine of the class described, the combination of a frame having two guideways; a fixed die, having a longitudinal rib, mounted on said frame above said guideways; a movable die, having a longitudinal groove adapted to receive said longitudinal rib, and transverse grooves in its upper surface; a main shaft journaled in said frame; an upper feed roller shaft journaled in said frame; a ratchet wheel mounted on said upper feed roller shaft; a lever; carrying a pawl, mounted on said upper feed roller shaft; a crank mounted on said main shaft: a link-bar connecting said lever and said crank; brackets mounted on said movable die; a supplementary shaft mounted in said brackets; off-bearing arms mounted on said supplementary shaft and normally resting in the transverse grooves in said movable die; a tilting arm mounted on said supplementary shaft; a slotted bar havingl its slotted portion disposed around said main shaft and its upper end connected to said tilting arni; a roller mounted on said slotted bar; and a segmental cam mounted on said main shaft and adapted to cooperate with said roller.

(l. In a machine of the class described, the combination of a frame having two guideways; a fixed die, having a longitudinal rib, mounted on said frame above said guideways; a movable die mounted in said guideways and having a longitudinal groove adapted to receive said longitudinal rib` and transverse grooves in its upper surface, a

main shaft journaled in said frame; brackets mounted on said movable die; a supplementary shaft journaled in said brackets; off-bearing arms mounted on said supplementary shaft and normally resting in the transverse grooves in said movable die; a tilting arm mounted on said supplementary shaft; a slotted bar having its slotted pory tion disposed around said main shaft and its upper end connected to said tilting arm; a roller mounted on said slotted bar; a segmental cam mounted on said main shaft and adapted to cooperate with said roller; a pair of shafts having sprockets thereon, journaled in said frame; sprocket chains, having standards thereon, mounted on said sprockets; and a crank mounted on one of said shafts.

7. In a machine of the class described, the combination of a frame having two guideways; a fixed die, having a longitudinal rib, mounted on said frame above said guideways; a shear blade bolted onthe back of said fixed die; a bending plate bolted on the front of said fixed die ;Y a movable die, having a longitudinal groove adapted to receive said longitudinal rib, transverse grooves 1n its upper surface, and downwardly extending slides, mounted in said guideways; rollers mounted on said slides;- a shear blade bolted on the back of said movable die; a main shaft journaled in said frame; and cams mounted on said main shaft and adapted to cooperate with said rollers.

8. In a machine of the class described, the combination of a frame having two guideways; a fixed die, having a longitudinal rib, mounted on said frame above said guideways; a shear blade bolted on the back of said fixed die; a bending plate bolted onv the front of said fixed die; a movable die, having a longitudinal groove adapted to receive said longitudinal rib, mounted in said guideways; rollers mounted on said fixed die; a shear blade bolted on the back of said movable die; a plate bolted on the front of said movable die; a main shaft journaled in said frame; cams mounted on said main shaft and adapted to cooperate withsaid rollers; an upper feed roller shaft journaled in. said traine; a ratchet wheel mounted on said upper feed roller shaft; a lever, carrying a pawl adapted to engage said ratchet wheel, mounted on said upper jeed roller shaft; a crank mounted on said main shaft; and a link-bar connecting said lever and said ci'anl-. n

9. In a machine of the class described, the

conibinaton of a frame having two guiden .va` s a fixed die, having a longitudinal rib,

mounted on said frame above said guideweys; a shear blade bolted on the back of said tir-.ed die; a bending plate' bolted on the said longitudinal rib, transverse grooves in its upper surface, and ldownwardly extending slides, mounted in said guideways; rollers mounted on said slides; a shear blade bolted on the back'of said movable die; a main shaft journaled in said frame; cams mounted on said main shaft and adapted to cooperate with said rollers; brackets mounted on said movable die; a supplementary shaft journaled in said brackets; off-bearing arms mounted on said supplementary shaft and normally resting in the transverse grooves in said movable die; a tilting arm mounted on said supplementary shaft; a slotted bar having its slotted portion disposed around said main shaft and its upper end connected to said tilting arm; a roller mounted on said slotted bar; and a segmental cam mounted on said main shaft and adapted to cooperate with said roller.

10. In a machine of the class described,

the combination of a frame Yhaving two guideways; a fixed die, having a longitudinal rib, mounted on said frame above said guideways; a shear blade bolted on the back Iof said fixed die; a movable die, having a cooperate with said rollers; an upper feedV Y roller shaft journaled in said frame; a lower feed roller shaft journaled in said frame directly below said upper feed roller shaft; a gear mounted on said upper feed roller shaft and a gear mounted on said lower feed roller shaft and ineshed with each other; a ratchet wheel mounted on said upper feed roller shaft; a lever, carrying a pawl adapted to 'engage saidi'atchet wheel, mounted on said upper feed roller shaft; a crank mounted on' said' main shaft; a link-bar connecting said lever and said crank; and feed rollers mounted on said feed roller shafts.

11. In a machine of the class described, the combinationV of a frame having two guideways; a fixed die,- having a. longitudinal. rib, mounted on said frame above said guideways; a shear blade bolted on the back of said fixed die; a movable die, having a longitudinal groove adapted to receive said longitudinal rib, and downwardly extending slides, mounted in said guidewajs; rollers mounted on said slides; a shear blade bolted on the back of said movable die; a main shaft journaled in said frame; cams mounted on said main shaft and adapted to cooperate with said rollers; van upper feed roller shaft journaled in Said frame; a ratchet wheel mounted on said upper feed Vroller shaft.: a lever, earryinga paivl adapted to engage said ratchet wheel, mounted on Y said upper feed roller shaft; a crank' mounted on s l main shaft; a link-bar connecting said lent i id said crank; a lower feed roller shaft journalcd in said frame directly below said upper feed roller shaft; two slitting and perforating feed rollers mounted on said upper feed roller shaft, each roller comprising a cylinder having rectangular radial grooves in one end and sen'iicircular radial grooves in the other end, a collar having similar rectangular radial grooves and vdisposed with its rectangular radial grooves adjacent to the. rectangular radial grooves of said cylinder, a collar having similar semicircular radial grooves and disposed with its scmicircular radial grooves adjacent to the semicireular radial grooves of said cylinder, knives, having two slitting segments, disposed in said rectangular radial grooves, and pins disposed in said seniicircular radial grooves; and two feed rollers mounted on aid lower feed roller shaft and having peripheral grooves adapted to receive the knives and pins of said slitting and perforating feed rollers.

l2. ln a machine of the class described, the combination of a frame having two guideways; a fixed die, having a longitudinal rib, mounted on said frame above said guideways; a movable die, having a longitudinal groove adapted to receive said longitudinal rib, and downwardly extending slides, mounted in said guideways; rollers on said slides; a main shaft journaled in said frame; cams mounted on said main shaft and adapted to cooperate with said rollers; an upper feed roller shaft journaled in said frame; a lower feed roller shaft journaled in said frame directly below said upper feed roller shaft; two slitting and perforating feed rollers mounted on said upper feed roller shaft, each roller comprising a cylinder having rectangular radial grooves in one end and semicircular radial grooves in the other end, a collar having similar' rec tangular radial grooves and disposed with its rectangular radial grooves adjacent to the rectangular radial grooves of said cylinder, a collar having similar semicircular radial grooves and disposed with its semicircular radial grooves adjacent to the semicircular radial grooves of said cylinder, knives, having two slitting segments, disposed in said rectangular radial grooves and pins disposed in said semicircular radial grooves; two feed rollers mounted on said lower feed roller shaft and having peripheral grooves adapted toreceive the knives and pins of said slitting and perforating feed rollers; two perforating feed rollers mounted on said upper feed roller shaft, each of said perforating feed rollers comprising two collars having semicircular radial grooves and disposed with the grooves of one collar adjacent to the grooves of the of said iXed die; a movable die, having aV longitudinal groove adapted to receive said longitudinal rib, and downwardly extending slides; mounted in said guideways; rollers mounted on said slides; a shear blade bolted on the back of said movable die; a Y

main shaft journaled in said frame; cams mounted on said main shaft and adapted to cooperate with said rollers; an upper feed roller .shaft journaled in said frame; a ratchet wheel mount-ed on said upper feed roller shaft; a lever, carrying a pawl, adapted to engage said ratchet wheel, mounted on said upper feed roller shaft; a crank mounted on said main shaft; a link-bar connecting said lever and said crank; a lower feed roller shaft journaled in said frame directly below said upper feed roller shaft; a gear mounted on said upper feed roller shaft and a gear mounted on said lower feed roller shaft and meshed with each other; two slitting and perforating rollers mounted 0n said upper feed roller shaft,each roller comprising a cylinder having rectangular radial grooves in one end and semicircular radial grooves in the other end, a collar having similar rectangular radial grooves and disposed with its rectangular radial grooves adjacent to the rectangular radial grooves of said cylinder, a collar having similar semicircular radial grooves and disposed with its semicircular radial grooves adjacent to the semicircular radial grooves in said cylinder, knives, having two slitting segments, disposed in said rectangular radial grooves and pins disposed insaid semicircular radial grooves; two feed rollers mounted on said lower feed roller shaft and having peripheral grooves adapted to ref ceive the knives and pins of said slittingand perforating rollers; two perforatlng feed rollers mounted on said upper feed roller shaft, each comprising twocolla-rs having semicircular radial grooves and disposed with the semicircular radial grooves of one collar adjacent tol the semicircular radial grooves of the other, and pins disposed in said semicircular radial grooves; two feed rollers mounted on said lower feed roller shaft and having peripheral grooves adapted to receive the points of said pins in said perforating feed rollers; two guide collars mounted on said lower feed roller shaft; and a shaft journaled in the rea-r Of said frame, having two flanged guide rollers and a central supporting roller mounted thereon.

omvnn s. nowMAN. 

